Fiori App F2548 "Upload General Journal Entries" - Real Estate fields

Hi all,

We've activated in Financial Asset Management (OBY6) and Real Estate Management (OKKP). In the backend the RE fields are automatically available in the entry screens, e.g. FB01. I'd expected these fields would be available in the template of the Fiori apps to upload general journal entries as well, but they aren't. They are not showing up in this list either:

https://help.sap.com/viewer/0fa84c9d9c634132b7c4abb9ffdd8f06/2005.500/en-US/41f88d19c3b64b1db1c2aa80165d9494.html

I'm wondring why these fields aren't available and how I can make them available.

Thanks for your help,

Alexis